We proposed a hierarchical locking scheme enabled by blockchain to assist nested operations within the decentralized setting. The proposed solution incorporates the blockchain capabilities of immutability, decentralized validation, and execution in smart contracts, unlike the traditional concurrency control mechanisms that use centralized lock management. Upon a subtransaction finishing its working, the respective lock is freed per the hierarchical locking protocol, and the next transactions authenticate the before- and after-images with blockchain verification. This is to guarantee consistency and safe concurrent execution of dependent transactions. The suggested solution enhances concurrency of systems in that, the number of nested transactions running at the same time can be achieved without affecting the correctness of the system because hierarchical dependency control is enforced. The framework offers transparency in execution, resistance to tampering, and trusted auditability by integrating models of layered transactions with blockchain-based validation. Generalized lock compatibility rules and hierarchical access control enable an efficient management of data objects of various granularities.